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Will Replacement Mounting Hardware for Thule Summit Cargo Box Fit Aero Crossbars


If I understand correctly from other questions beeing answered, I can use the TH04997 Mounting Kit to fix a Thule Summit Box on a rack which has bars with a width of 3inch wide wing style and not square bars. Assuming the spacing in the mounting Kit is 4inch and between 2 times 2 holes of the summit box it measures 4? Thanks a lot and Regards


Expert Reply:

You are correct that the Thule Replacement QM3 # TH04997 is the correct replacement hardware available for your Thule Summit 631. The QM3 hardware will let you mount your Summit cargo box on elliptical or aero-style crossbars.

The bolts are spaced 4 inches apart as you mentioned. I have attached a photo showing this measurement on the bottom bracket of the mounting hardware. This will match up with holes in your cargo box to mount the box to your roof rack.

click to enlarge
expert reply by:
Victoria B

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